Rev. 1.0
Installation
2—15
Pin Number
Function
1
Ground
2 (no connection)
3
Composite Out (sample of stereo generator output)
4
FSK In (Normal
ly high; pull low t
o shift carrier frequency
approximately 7.5 kHz. Connect to open collect
or or relay
contacts of user-supplied FSK keyer.
)
5
/A
ut
o Carrier Off (Pull l
ow t
o enable automatic t
urnoff of
carrier with program failure.)
6
Meter Battery (unregulated DC voltage; 5 volts = 50 VDC)
7
Meter RF Watts (1 volt = 100 watts)
8
Meter PA Volts (5 volts = 50 VDC)
9
/E
xt
. Enable (Pull low to disable internal st
ereo generator
and enable Ext
ernal Composite Input.)
10
a) 38 kHz Out (From stereo generator for power supply
synchronizat
ion.
)
b) For transmitters equipped wit
h tuner option, this pin
becomes the right audi
o out
put for an 8–ohm monitor
speaker. 38kHZ Out is disabled.
11
ALC
12
/Carrier Off (pull low to turn carrier off.)
13
Fault Summary (line goes high if any fault light is activated.)
14
Meter PA Temperature (5 volts = 100 degrees C.)
15
Meter PA Current (1 volt = 10 amperes DC.)
Table 2-4 Remote I/O Connector
Illustration 2–13 Remote I/O Connector
1
15
8
9